A high-speed gated second generation image intensifier which is of short afterglow,high resolution and fast response time was designed.A high performance range-gated ICCD was obtained by coupling a fiber taper to CCD.The performance of each component and their effects on the system spatial resolution were analyzed.FPGA was employed to design the circuit control system which can achieve digital control for ICCD by producing a nanosecond gating width.The system can also obtain clear images of objectives in different brightness and distance by adjusting the pulse width and delay time.In addition,the background noise was reduced and the dynamic range of imaging was increased.The gain of this system can be monitored and adjusted to reach a signal-noise ratio of 20∶1 dB.A gating DC pulse with voltage of －200 V and width of 3 ns-DC continuously adjustable was applied to achieve image intensifier gating.In order to improve the supplement speed of electrons to the photocathode,a square grid which has 5 μm line width and 50 μm spacing lithography was equipped to the input window surface.This also ensured that the photocathode response speed is fast enough when the gating width is 3 ns.The highest gating frequency can reach to 300 kHz.The experimental test shows that the gain of the image intensifier is 10 718 cd/m2 lx when Microchannel Plate voltage is 700 V and phosphor screen voltage is 5 000 V,the system spatial resolution is 29.7 lp/mm.